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Ma Y, Flückiger I, Nicolet J, Pang J, Dickinson JB, De Bellis D, Emonet A, Fujita S, Geldner N. Comparisons of two receptor-MAPK pathways in a single cell-type reveal mechanisms of signalling specificity. NATURE PLANTS 2024:10.1038/s41477-024-01768-y. [PMID: 39256564 DOI: 10.1038/s41477-024-01768-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 07/19/2024] [Indexed: 09/12/2024]
Abstract
Cells harbour numerous receptor pathways to respond to diverse stimuli, yet often share common downstream signalling components. Mitogen-activated protein kinase (MPK) cascades are an example of such common hubs in eukaryotes. How such common hubs faithfully transduce distinct signals within the same cell-type is insufficiently understood, yet of fundamental importance for signal integration and processing in plants. We engineered a unique genetic background allowing direct comparisons of a developmental and an immunity pathway in one cell-type, the Arabidopsis root endodermis. We demonstrate that the two pathways maintain distinct functional and transcriptional outputs despite common MPK activity patterns. Nevertheless, activation of different MPK kinases and MPK classes led to distinct functional readouts, matching observed pathway-specific readouts. On the basis of our comprehensive analysis of core MPK signalling elements, we propose that combinatorial activation within the MPK cascade determines the differential regulation of an endodermal master transcription factor, MYB36, that drives pathway-specific gene activation.
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Affiliation(s)
- Yan Ma
- Department of Plant Molecular Biology, Biophore, UNIL-Sorge, University of Lausanne, Lausanne, Switzerland.
- Gregor Mendel Institute of Molecular Plant Biology (GMI), Austrian Academy of Sciences, Vienna BioCenter, Vienna, Austria.
| | - Isabelle Flückiger
- Department of Plant Molecular Biology, Biophore, UNIL-Sorge, University of Lausanne, Lausanne, Switzerland
| | - Jade Nicolet
- Department of Plant Molecular Biology, Biophore, UNIL-Sorge, University of Lausanne, Lausanne, Switzerland
| | - Jia Pang
- Department of Plant Molecular Biology, Biophore, UNIL-Sorge, University of Lausanne, Lausanne, Switzerland
| | - Joe B Dickinson
- Department of Plant Molecular Biology, Biophore, UNIL-Sorge, University of Lausanne, Lausanne, Switzerland
- Department of Fundamental Microbiology, Biophore, UNIL-Sorge, University of Lausanne, Lausanne, Switzerland
| | - Damien De Bellis
- Department of Plant Molecular Biology, Biophore, UNIL-Sorge, University of Lausanne, Lausanne, Switzerland
| | - Aurélia Emonet
- Department of Plant Molecular Biology, Biophore, UNIL-Sorge, University of Lausanne, Lausanne, Switzerland
- Max Planck Institute for Plant Breeding Research, Cologne, North Rhine-Westphalia, Germany
| | - Satoshi Fujita
- Department of Plant Molecular Biology, Biophore, UNIL-Sorge, University of Lausanne, Lausanne, Switzerland
- Plant Science Research Laboratory (LRSV), UMR5546 CNRS/Université Toulouse 3, Auzeville Tolosane, France
| | - Niko Geldner
- Department of Plant Molecular Biology, Biophore, UNIL-Sorge, University of Lausanne, Lausanne, Switzerland.
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2
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Yan S, Zhan M, Liu Z, Zhang X. Insight into the transcriptional regulation of key genes involved in proline metabolism in plants under osmotic stress. Biochimie 2024:S0300-9084(24)00192-5. [PMID: 39121900 DOI: 10.1016/j.biochi.2024.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 06/30/2024] [Accepted: 08/06/2024] [Indexed: 08/12/2024]
Abstract
Proline biosynthesis and catabolism pathways are executed by powerful action of specific enzymes that are subjected to environmental fluctuations at the transcriptional level. Previous researches have demonstrated that osmotic stress-induced upstream events can affect the expression of proline metabolism-related genes, which results in adjustable free proline accumulation to protect plant cells from severe damage. Here, we mainly describe the mechanisms for how some key factors, such as transcription factors, ABA (abscisic acid), Ca2+, MAPK cascades, CK (cytokinin) and phospholipase, in a phosphorylated manner, vividly function in the transcriptional regulation of proline metabolism under osmotic stress. These mechanisms reveal that sustaining of proline homeostasis is an efficient way for plants to adapt to osmotic stress.
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Affiliation(s)
- Shengjie Yan
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, China.
| | - Meng Zhan
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, China
| | - Zhi Liu
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, China
| | - Xianwen Zhang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, China.
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3
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Cannon AE, Horn PJ. The Molecular Frequency, Conservation and Role of Reactive Cysteines in Plant Lipid Metabolism. PLANT & CELL PHYSIOLOGY 2024; 65:826-844. [PMID: 38113384 DOI: 10.1093/pcp/pcad163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 11/21/2023] [Accepted: 12/18/2023] [Indexed: 12/21/2023]
Abstract
Cysteines (Cys) are chemically reactive amino acids containing sulfur that play diverse roles in plant biology. Recent proteomics investigations in Arabidopsis thaliana have revealed the presence of thiol post-translational modifications (PTMs) in several Cys residues. These PTMs are presumed to impact protein structure and function, yet mechanistic data regarding the specific Cys susceptible to modification and their biochemical relevance remain limited. To help address these limitations, we have conducted a wide-ranging analysis by integrating published datasets encompassing PTM proteomics (comparing S-sulfenylation, persulfidation, S-nitrosylation and S-acylation), genomics and protein structures, with a specific focus on proteins involved in plant lipid metabolism. The prevalence and distribution of modified Cys residues across all analyzed proteins is diverse and multifaceted. Nevertheless, by combining an evaluation of sequence conservation across 100+ plant genomes with AlphaFold-generated protein structures and physicochemical predictions, we have unveiled structural propensities associated with Cys modifications. Furthermore, we have identified discernible patterns in lipid biochemical pathways enriched with Cys PTMs, notably involving beta-oxidation, jasmonic acid biosynthesis, fatty acid biosynthesis and wax biosynthesis. These collective findings provide valuable insights for future investigations targeting the mechanistic foundations of Cys modifications and the regulation of modified proteins in lipid metabolism and other metabolic pathways.
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Affiliation(s)
- Ashley E Cannon
- BioDiscovery Institute and Department of Biological Sciences, University of North Texas, 1155 Union Circle, Denton, TX 76203, USA
| | - Patrick J Horn
- BioDiscovery Institute and Department of Biological Sciences, University of North Texas, 1155 Union Circle, Denton, TX 76203, USA
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4
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Keyl A, Kwas V, Lewandowska M, Herrfurth C, Kunst L, Feussner I. AtMYB41 acts as a dual-function transcription factor that regulates the formation of lipids in an organ- and development-dependent manner. PLANT BIOLOGY (STUTTGART, GERMANY) 2024; 26:568-582. [PMID: 38634447 DOI: 10.1111/plb.13650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 04/02/2024] [Indexed: 04/19/2024]
Abstract
The plant cuticle controls non-stomatal water loss and can serve as a barrier against biotic agents, whereas the heteropolymer suberin and its associated waxes are deposited constitutively at specific cell wall locations. While several transcription factors controlling cuticle formation have been identified, those involved in the transcriptional regulation of suberin biosynthesis remain poorly characterized. The major goal of this study was to further analyse the function of the R2R3-Myeloblastosis (MYB) transcription factor AtMYB41 in formation of the cuticle, suberin, and suberin-associated waxes throughout plant development. For functional analysis, the organ-specific expression pattern of AtMYB41 was analysed and Atmyb41ge alleles were generated using the CRISPR/Cas9 system. These were investigated for root growth and water permeability upon stress. In addition, the fatty acid, wax, cutin, and suberin monomer composition of different organs was evaluated by gas chromatography. The characterization of Atmyb41ge mutants revealed that AtMYB41 negatively regulates the production of cuticular lipids and fatty acid biosynthesis in leaves and seeds, respectively. Remarkably, biochemical analyses indicate that AtMYB41 also positively regulates the formation of cuticular waxes in stems of Arabidopsis thaliana. Overall, these results suggest that the AtMYB41 acts as a negative regulator of cuticle and fatty acid biosynthesis in leaves and seeds, respectively, but also as a positive regulator of wax production in A. thaliana stems.
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Affiliation(s)
- A Keyl
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute, University of Goettingen, Goettingen, Germany
| | - V Kwas
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute, University of Goettingen, Goettingen, Germany
| | - M Lewandowska
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute, University of Goettingen, Goettingen, Germany
| | - C Herrfurth
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute, University of Goettingen, Goettingen, Germany
- Service Unit for Metabolomics and Lipidomics, Goettingen Center for Molecular Biosciences (GZMB), University of Goettingen, Goettingen, Germany
| | - L Kunst
- Department of Botany, University of British Columbia, Vancouver, BC, Canada
| | - I Feussner
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute, University of Goettingen, Goettingen, Germany
- Service Unit for Metabolomics and Lipidomics, Goettingen Center for Molecular Biosciences (GZMB), University of Goettingen, Goettingen, Germany
- Department of Plant Biochemistry, Goettingen Center for Molecular Biosciences (GZMB), University of Goettingen, Goettingen, Germany
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5
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Liu J, Tang X, Zhang H, Wei M, Zhang N, Si H. Transcriptome Analysis of Potato Leaves under Oxidative Stress. Int J Mol Sci 2024; 25:5994. [PMID: 38892181 PMCID: PMC11172952 DOI: 10.3390/ijms25115994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 05/23/2024] [Accepted: 05/28/2024] [Indexed: 06/21/2024] Open
Abstract
Potato (Solanum tuberosum L.) is a major global food crop, and oxidative stress can significantly impact its growth. Previous studies have shown that its resistance to oxidative stress is mainly related to transcription factors, post-translational modifications, and antioxidant enzymes in vivo, but the specific molecular mechanisms remain unclear. In this study, we analyzed the transcriptome data from potato leaves treated with H2O2 and Methyl viologen (MV), and a control group, for 12 h. We enriched 8334 (CK vs. H2O2) and 4445 (CK vs. MV) differentially expressed genes (DEGs), respectively, and randomly selected 15 DEGs to verify the sequencing data by qRT-PCR. Gene ontology (GO) enrichment analysis showed that the DEGs were mainly concentrated in cellular components and related to molecular function, and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis indicated that most of the DEGs were related to metabolic pathways, plant hormone signal transduction, MAPK-signaling pathway, and plant-pathogen interactions. In addition, several candidate transcription factors, mainly including MYB, WRKY, and genes associated with Ca2+-mediated signal transduction, were also found to be differentially expressed. Among them, the plant hormone genes Soltu.DM.03G022780 and Soltu.DM.06G019360, the CNGC gene Soltu.DM.06G006320, the MYB transcription factors Soltu.DM.06G004450 and Soltu.DM.09G002130, and the WRKY transcription factor Soltu.DM.06G020440 were noticeably highly expressed, which indicates that these are likely to be the key genes in the regulation of oxidative stress tolerance. Overall, these findings lay the foundation for further studies on the molecular mechanisms of potato leaves in response to oxidative stress.
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Affiliation(s)
- Juping Liu
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China; (J.L.); (X.T.); (H.Z.); (N.Z.)
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;
| | - Xun Tang
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China; (J.L.); (X.T.); (H.Z.); (N.Z.)
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;
| | - Huanhuan Zhang
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China; (J.L.); (X.T.); (H.Z.); (N.Z.)
- College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
| | - Meng Wei
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;
| | - Ning Zhang
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China; (J.L.); (X.T.); (H.Z.); (N.Z.)
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;
| | - Huaijun Si
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China; (J.L.); (X.T.); (H.Z.); (N.Z.)
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;
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6
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Baoxiang W, Zhiguang S, Yan L, Bo X, Jingfang L, Ming C, Yungao X, Bo Y, Jian L, Jinbo L, Tingmu C, Zhaowei F, Baiguan L, Dayong X, Bello BK. A pervasive phosphorylation cascade modulation of plant transcription factors in response to abiotic stress. PLANTA 2023; 258:73. [PMID: 37668677 DOI: 10.1007/s00425-023-04232-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 08/23/2023] [Indexed: 09/06/2023]
Abstract
MAIN CONCLUSION Transcriptional regulation of stress-responsive genes is a crucial step in establishing the mechanisms behind plant abiotic stress tolerance. A sensitive method of regulating transcription factors activity, stability, protein interaction, and subcellular localization is through phosphorylation. This review highlights a widespread regulation mechanism that involves phosphorylation of plant TFs in response to abiotic stress. Abiotic stress is one of the main components limiting crop yield and sustainability on a global scale. It greatly reduces the land area that is planted and lowers crop production globally. In all living organisms, transcription factors (TFs) play a crucial role in regulating gene expression. They participate in cell signaling, cell cycle, development, and plant stress response. Plant resilience to diverse abiotic stressors is largely influenced by TFs. Transcription factors modulate gene expression by binding to their target gene's cis-elements, which are impacted by genomic characteristics, DNA structure, and TF interconnections. In this review, we focus on the six major TFs implicated in abiotic stress tolerance, namely, DREB, bZIP, WRKY, ABF, MYB, and NAC, and the cruciality of phosphorylation of these transcription factors in abiotic stress signaling, as protein phosphorylation has emerged as one of the key post-translational modifications, playing a critical role in cell signaling, DNA amplification, gene expression and differentiation, and modification of other biological configurations. These TFs have been discovered after extensive study as stress-responsive transcription factors which may be major targets for crop development and important contributors to stress tolerance and crop production.
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Grants
- CARS-01-61 the earmarked funds for China Agricultural Research System
- 2015BAD01B01 National Science and Technology Support Program of China
- BE2016370-3 Science and Technology Support Program of Jiangsu Province, China
- BE2017323 Science and Technology Support Program of Jiangsu Province, China
- BK20201214 Natural Science Foundation of Jiangsu Province of China
- BK20161299 the Natural Science Foundation of Jiangsu Province, China
- QNJJ1704 the Financial Grant Support Program of Lianyungang City, Jiangsu Province, China
- QNJJ2102 the Financial Grant Support Program of Lianyungang City, Jiangsu Province, China
- QNJJ2107 the Financial Grant Support Program of Lianyungang City, Jiangsu Province, China
- QNJJ2211 the Financial Grant Support Program of Lianyungang City, Jiangsu Province, China
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Affiliation(s)
- Wang Baoxiang
- Collaborative Innovation Center for Modern Crop Production, Lianyungang Institute of Agricultural Sciences, Lianyungang, 222006, Jiangsu, China
| | - Sun Zhiguang
- Collaborative Innovation Center for Modern Crop Production, Lianyungang Institute of Agricultural Sciences, Lianyungang, 222006, Jiangsu, China
| | - Liu Yan
- Collaborative Innovation Center for Modern Crop Production, Lianyungang Institute of Agricultural Sciences, Lianyungang, 222006, Jiangsu, China
| | - Xu Bo
- Collaborative Innovation Center for Modern Crop Production, Lianyungang Institute of Agricultural Sciences, Lianyungang, 222006, Jiangsu, China
| | - Li Jingfang
- Collaborative Innovation Center for Modern Crop Production, Lianyungang Institute of Agricultural Sciences, Lianyungang, 222006, Jiangsu, China
| | - Chi Ming
- Collaborative Innovation Center for Modern Crop Production, Lianyungang Institute of Agricultural Sciences, Lianyungang, 222006, Jiangsu, China
| | - Xing Yungao
- Collaborative Innovation Center for Modern Crop Production, Lianyungang Institute of Agricultural Sciences, Lianyungang, 222006, Jiangsu, China
| | - Yang Bo
- Collaborative Innovation Center for Modern Crop Production, Lianyungang Institute of Agricultural Sciences, Lianyungang, 222006, Jiangsu, China
| | - Li Jian
- Collaborative Innovation Center for Modern Crop Production, Lianyungang Institute of Agricultural Sciences, Lianyungang, 222006, Jiangsu, China
| | - Liu Jinbo
- Collaborative Innovation Center for Modern Crop Production, Lianyungang Institute of Agricultural Sciences, Lianyungang, 222006, Jiangsu, China
| | - Chen Tingmu
- Collaborative Innovation Center for Modern Crop Production, Lianyungang Institute of Agricultural Sciences, Lianyungang, 222006, Jiangsu, China
| | - Fang Zhaowei
- Collaborative Innovation Center for Modern Crop Production, Lianyungang Institute of Agricultural Sciences, Lianyungang, 222006, Jiangsu, China
| | - Lu Baiguan
- Collaborative Innovation Center for Modern Crop Production, Lianyungang Institute of Agricultural Sciences, Lianyungang, 222006, Jiangsu, China
| | - Xu Dayong
- Collaborative Innovation Center for Modern Crop Production, Lianyungang Institute of Agricultural Sciences, Lianyungang, 222006, Jiangsu, China.
| | - Babatunde Kazeem Bello
- Collaborative Innovation Center for Modern Crop Production, Lianyungang Institute of Agricultural Sciences, Lianyungang, 222006, Jiangsu, China.
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7
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Luo S, Liu Z, Wan Z, He X, Lv J, Yu J, Zhang G. Foliar Spraying of NaHS Alleviates Cucumber Salt Stress by Maintaining N +/K + Balance and Activating Salt Tolerance Signaling Pathways. PLANTS (BASEL, SWITZERLAND) 2023; 12:2450. [PMID: 37447010 DOI: 10.3390/plants12132450] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 06/15/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023]
Abstract
Hydrogen sulfide (H2S) is involved in the regulation of plant salt stress as a potential signaling molecule. This work investigated the effect of H2S on cucumber growth, photosynthesis, antioxidation, ion balance, and other salt tolerance pathways. The plant height, stem diameter, leaf area and photosynthesis of cucumber seedlings were significantly inhibited by 50 mmol·L-1 NaCl. Moreover, NaCl treatment induced superoxide anion (O2·-) and Na+ accumulation and affected the absorption of other mineral ions. On the contrary, exogenous spraying of 200 μmol·L-1 sodium hydrosulfide (NaHS) maintained the growth of cucumber seedlings, increased photosynthesis, enhanced the ascorbate-glutathione cycle (AsA-GSH), and promoted the absorption of mineral ions under salt stress. Meanwhile, NaHS upregulated SOS1, SOS2, SOS3, NHX1, and AKT1 genes to maintain Na+/K+ balance and increased the relative expression of MAPK3, MAPK4, MAPK6, and MAPK9 genes to enhance salt tolerance. These positive effects of H2S could be reversed by 150 mmol·L-1 propargylglycine (PAG, a specific inhibitor of H2S biosynthesis). These results indicated that H2S could mitigate salt damage in cucumber, mainly by improving photosynthesis, enhancing the AsA-GSH cycle, reducing the Na+/K+ ratio, and inducing the SOS pathway and MAPK pathway.
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Affiliation(s)
- Shilei Luo
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Zeci Liu
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Zilong Wan
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Xianxia He
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Jian Lv
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Jihua Yu
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
- State Key Laboratory of Aridland Crop Science, Lanzhou 730070, China
| | - Guobin Zhang
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
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8
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Liu M, Lv Y, Cao B, Chen Z, Xu K. Physiological and molecular mechanism of ginger ( Zingiber officinale Roscoe) seedling response to salt stress. FRONTIERS IN PLANT SCIENCE 2023; 14:1073434. [PMID: 37008470 PMCID: PMC10064006 DOI: 10.3389/fpls.2023.1073434] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 02/28/2023] [Indexed: 06/19/2023]
Abstract
We used 'Shannong No.1' experimental material to simulate higher salt concentration in ginger and analyzed the physiological responses of different parts of ginger seedlings under salt stress. The results showed that salt stress led to a significant decrease in fresh and dry weight of ginger, lipid membrane peroxidation, increased sodium ion content and enhanced activity of antioxidant enzymes. Compared with the control, the overall plant dry weight of ginger under salt stress decreased by about 60%, and the MDA content in roots, stems, leaves, and rhizomes increased by 372.27%, 184.88%, 291.5%, and 171.13%, respectively, and the APX content increased by 188.85%, 165.56%, 195.38%, and 40.08%, respectively. After analysis of the physiological indicators, it was found that the roots and leaves of ginger were the most significantly changed parts. We analyzed the transcriptional differences between ginger roots and leaves by RNA-seq and found that they jointly initiated MAPK signaling pathways in response to salt stress. By combining physiological and molecular indicators, we elucidated the response of different tissues and parts of ginger to salt stress during the seedling stage.
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Affiliation(s)
- Miaohong Liu
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, Tai’an, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huanghuai Region, Ministry of Agriculture and Rural Affairs, Tai’an, China
| | - Yao Lv
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, Tai’an, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huanghuai Region, Ministry of Agriculture and Rural Affairs, Tai’an, China
| | - Bili Cao
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, Tai’an, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huanghuai Region, Ministry of Agriculture and Rural Affairs, Tai’an, China
| | - Zijing Chen
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, Tai’an, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huanghuai Region, Ministry of Agriculture and Rural Affairs, Tai’an, China
| | - Kun Xu
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, Tai’an, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huanghuai Region, Ministry of Agriculture and Rural Affairs, Tai’an, China
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9
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Chen N, Pan L, Yang Z, Su M, Xu J, Jiang X, Yin X, Wang T, Wan F, Chi X. A MYB-related transcription factor from peanut, AhMYB30, improves freezing and salt stress tolerance in transgenic Arabidopsis through both DREB/CBF and ABA-signaling pathways. FRONTIERS IN PLANT SCIENCE 2023; 14:1136626. [PMID: 36925750 PMCID: PMC10013196 DOI: 10.3389/fpls.2023.1136626] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 02/14/2023] [Indexed: 06/12/2023]
Abstract
Abiotic stresses such as salinity and low temperature have serious impact on peanut growth and yield. The present work investigated the function of a MYB-related transcription factor gene AhMYB30 obtained from peanut under salt and low temperature stresses by transgenic methods. The results indicated that the overexpression of AhMYB30 in Arabidopsis could enhance the resistance of transgenic plants to freezing and salt stresses. The expression of stress-response genes RD29A (Response-to-Dehydration 29A), COR15A (Cold-Regulated 15A), KIN1 (Kinesin 1) and ABI2 (Abscisic acid Insensitive 2) increased in transgenic plants compared with in wild-type. Subcellular localization and transcriptional autoactivation validation demonstrated that AhMYB30 has essential features of transcription factors. Therefore, AhMYB30 may increase salt and freezing stress tolerance as the transcription factor (TF) in Arabidopsis through both DREB/CBF and ABA-signaling pathways. Our results lay the theoretical foundation for exploring stress resistance mechanisms of peanut and offering novel genetic resources for molecular breeding.
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Affiliation(s)
- Na Chen
- Key Laboratory of Peanut Biology, Genetic & Breeding, Ministry of Agriculture and Rural Affairs, Shandong Peanut Research Institute, Qingdao, China
| | - Lijuan Pan
- Key Laboratory of Peanut Biology, Genetic & Breeding, Ministry of Agriculture and Rural Affairs, Shandong Peanut Research Institute, Qingdao, China
| | - Zhen Yang
- Key Laboratory of Peanut Biology, Genetic & Breeding, Ministry of Agriculture and Rural Affairs, Shandong Peanut Research Institute, Qingdao, China
| | - Maowen Su
- Department of Animal and Plant Quarantine, Qingdao Customs, Qingdao, China
| | - Jing Xu
- Key Laboratory of Peanut Biology, Genetic & Breeding, Ministry of Agriculture and Rural Affairs, Shandong Peanut Research Institute, Qingdao, China
| | - Xiao Jiang
- Key Laboratory of Peanut Biology, Genetic & Breeding, Ministry of Agriculture and Rural Affairs, Shandong Peanut Research Institute, Qingdao, China
| | - Xiangzhen Yin
- Key Laboratory of Peanut Biology, Genetic & Breeding, Ministry of Agriculture and Rural Affairs, Shandong Peanut Research Institute, Qingdao, China
| | - Tong Wang
- Key Laboratory of Peanut Biology, Genetic & Breeding, Ministry of Agriculture and Rural Affairs, Shandong Peanut Research Institute, Qingdao, China
| | - Feifei Wan
- Division for Guidance of Cooperative Economy, Binzhou Agricultural Technology Extension Center, Binzhou, China
| | - Xiaoyuan Chi
- Key Laboratory of Peanut Biology, Genetic & Breeding, Ministry of Agriculture and Rural Affairs, Shandong Peanut Research Institute, Qingdao, China
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10
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Saini LK, Bheri M, Pandey GK. Protein phosphatases and their targets: Comprehending the interactions in plant signaling pathways. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2023; 134:307-370. [PMID: 36858740 DOI: 10.1016/bs.apcsb.2022.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Protein phosphorylation is a vital reversible post-translational modification. This process is established by two classes of enzymes: protein kinases and protein phosphatases. Protein kinases phosphorylate proteins while protein phosphatases dephosphorylate phosphorylated proteins, thus, functioning as 'critical regulators' in signaling pathways. The eukaryotic protein phosphatases are classified as phosphoprotein phosphatases (PPP), metallo-dependent protein phosphatases (PPM), protein tyrosine (Tyr) phosphatases (PTP), and aspartate (Asp)-dependent phosphatases. The PPP and PPM families are serine (Ser)/threonine (Thr) specific phosphatases (STPs) that dephosphorylate Ser and Thr residues. The PTP family dephosphorylates Tyr residues while dual-specificity phosphatases (DsPTPs/DSPs) dephosphorylate Ser, Thr, and Tyr residues. The composition of these enzymes as well as their substrate specificity are important determinants of their functional significance in a number of cellular processes and stress responses. Their role in animal systems is well-understood and characterized. The functional characterization of protein phosphatases has been extensively covered in plants, although the comprehension of their mechanistic basis is an ongoing pursuit. The nature of their interactions with other key players in the signaling process is vital to our understanding. The substrates or targets determine their potential as well as magnitude of the impact they have on signaling pathways. In this article, we exclusively overview the various substrates of protein phosphatases in plant signaling pathways, which are a critical determinant of the outcome of various developmental and stress stimuli.
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Affiliation(s)
- Lokesh K Saini
- Department of Plant Molecular Biology, University of Delhi South Campus, Dhaula Kuan, New Delhi, India
| | - Malathi Bheri
- Department of Plant Molecular Biology, University of Delhi South Campus, Dhaula Kuan, New Delhi, India
| | - Girdhar K Pandey
- Department of Plant Molecular Biology, University of Delhi South Campus, Dhaula Kuan, New Delhi, India.
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11
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Cao A, Gao L, Wang F, Tong X, Xie S, Chen X, Lu T, Shen H, Liu H, Jin X, Li H. Expression profiling of the mitogen-activated protein kinase gene family reveals their diverse response pattern in two different salt-tolerant Glycyrrhiza species. Genes Genomics 2022; 44:757-771. [PMID: 35226330 DOI: 10.1007/s13258-021-01216-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 12/30/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Mitogen-activated protein kinases (MPKs) play important role in response to environmental stress as crucial signal receptors or sensors. Our previous study indicated that salt stress acts as a positive factor to stimulate the production of pharmacodynamic metabolites in the medicinal plant Glycyrrhiza uralensis. Currently, little is known about the MPK gene family and their functions in the medicinal plant G. uralensis. OBJECTIVE Identification, comprehensive bioinformatic analysis, expression profiling, and response pattern under salt stress of the G. uralensis GuMPK gene family. METHODS Genome-wide investigation and expression profiling of the MPK gene family in G. uralensis, and their phylogenetic relationships, evolutionary characteristics, gene structure, motif distribution, promoter cis-acting element, and expression pattern under salt stress in two different salt-tolerant Glycyrrhiza species were performed. RESULTS A total of 20 G. uralensis GuMPK genes were identified and categorized into five groups, and had conserved gene structure and motif distribution. Expression profiling of GuMPK genes suggested their potentially diverse functions in plant growth and in response to phytohormones and environmental stress, particularly GuMPK1, 2, 5, and 10 as key components for G. uralensis in response to abiotic stress. Further expression analysis under NaCl treatment in two different salt-tolerant Glycyrrhiza species displayed the MPKs' different response patterns, emphasizing the role of MPK2, 5, 7, and 16 as potentially crucial genes for Glycyrrhiza to respond to salt stress. CONCLUSION Our results provide a genome-wide identification and expression profiling of MPK gene family in G. uralensis, and establish the foundation for screening key responsive genes and understanding the potential function and regulatory mechanism of GuMPKs in salt responsiveness.
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Affiliation(s)
- Aiping Cao
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization of Ministry of Education, College of Life Sciences, Shihezi University, Shihezi, 832003, China
| | - Ling Gao
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization of Ministry of Education, College of Life Sciences, Shihezi University, Shihezi, 832003, China
| | - Fei Wang
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization of Ministry of Education, College of Life Sciences, Shihezi University, Shihezi, 832003, China
| | - Xuechen Tong
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization of Ministry of Education, College of Life Sciences, Shihezi University, Shihezi, 832003, China
| | - Shuangquan Xie
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization of Ministry of Education, College of Life Sciences, Shihezi University, Shihezi, 832003, China
| | - Xifeng Chen
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization of Ministry of Education, College of Life Sciences, Shihezi University, Shihezi, 832003, China
| | - Tianxin Lu
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization of Ministry of Education, College of Life Sciences, Shihezi University, Shihezi, 832003, China
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, College of Life Sciences, Hainan Normal University, Haikou, 571158, China
| | - Haitao Shen
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization of Ministry of Education, College of Life Sciences, Shihezi University, Shihezi, 832003, China
| | - Hailiang Liu
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization of Ministry of Education, College of Life Sciences, Shihezi University, Shihezi, 832003, China
- Institute for Regenerative Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200123, China
| | - Xiang Jin
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization of Ministry of Education, College of Life Sciences, Shihezi University, Shihezi, 832003, China.
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, College of Life Sciences, Hainan Normal University, Haikou, 571158, China.
| | - Hongbin Li
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization of Ministry of Education, College of Life Sciences, Shihezi University, Shihezi, 832003, China.
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12
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Liu L, Chao N, Yidilisi K, Kang X, Cao X. Comprehensive analysis of the MYB transcription factor gene family in Morus alba. BMC PLANT BIOLOGY 2022; 22:281. [PMID: 35676625 PMCID: PMC9175366 DOI: 10.1186/s12870-022-03626-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 05/03/2022] [Indexed: 05/30/2023]
Abstract
BACKGROUND The V-myb myeloblastosis viral oncogene homolog (MYB) family of proteins is large, containing functionally diverse transcription factors. However, MYBs in Morus are still poorly annotated and a comprehensive functional analysis of these transcription factors is lacking. RESULTS In the present study, a genome-wide identification of MYBs in Morus alba was performed. In total 166 MaMYBs were identified, including 103 R2R3-MYBs and four 3R-MaMYBs. Comprehensive analyses, including the phylogenetic analysis with putative functional annotation, motif and structure analysis, gene structure organization, promoter analysis, chromosomal localization, and syntenic relationships of R2R3-MaMYBs and 3R-MaMYBs, provided primary characterization for these MaMYBs. R2R3-MaMYBs covered the subgroups reported for R2R3-MYBs in Arabidopsis and Populus, and had two Morus-specific subgroups, indicating the high retention of MYBs in Morus. Motif analysis revealed high conservative residues at the start and end of each helix and residues consisting of the third helix in R2 and R3 repeats. Thirteen intron/exon patterns (a-m) were summarized, and the intron/exon pattern of two introns with phase numbers of 0 and 2 was the prevalent pattern for R2R3-MaMYBs. Various cis-elements in promoter regions were identified, and were mainly related to light response, development, phytohormone response, and abiotic and biotic stress response and secondary metabolite production. Expression patterns of R2R3-MaMYBs in different organs showed that MaMYBs involved in secondary cell wall components and stress responsiveness were preferentially expressed in roots or stems. R2R3-MaMYBs involved in flavonoid biosynthesis and anthocyanin accumulation were identified and characterized based on functional annotation and correlation of their expression levels with anthocyanin contents. CONCLUSION Based on a comprehensive analysis, this work provided functional annotation for R2R3-MYBs and an informative reference for further functional dissection of MYBs in Morus.
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Affiliation(s)
- Li Liu
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212018, Jiangsu, China.
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212018, Jiangsu, China.
| | - Nan Chao
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212018, Jiangsu, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212018, Jiangsu, China
| | - Keermula Yidilisi
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212018, Jiangsu, China
| | - Xiaoru Kang
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212018, Jiangsu, China
| | - Xu Cao
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212018, Jiangsu, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212018, Jiangsu, China
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13
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Gan Y, Kou Y, Yan F, Wang X, Wang H, Song X, Zhang M, Zhao X, Jia R, Ge H, Yang S. Comparative Transcriptome Profiling Analysis Reveals the Adaptive Molecular Mechanism of Yellow-Green Leaf in Rosa beggeriana 'Aurea'. FRONTIERS IN PLANT SCIENCE 2022; 13:845662. [PMID: 35401615 PMCID: PMC8987444 DOI: 10.3389/fpls.2022.845662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 02/10/2022] [Indexed: 05/08/2023]
Abstract
Rosa beggeriana 'Aurea' is a yellow-green leaf (yl) mutant and originated from Rosa beggeriana Schrenk by 60Co-γ irradiation, which is an important ornamental woody species. However, the molecular mechanism of the yl mutant remains unknown. Herein, comparative transcriptome profiling was performed between the yl type and normal green color type (WT) by RNA sequencing. A total of 3,372 significantly differentially expressed genes (DEGs) were identified, consisting of 1,585 upregulated genes and 1,787 downregulated genes. Genes that took part in metabolic of biological process (1,090), membrane of cellular component (728), catalytic (1,114), and binding of molecular function (840) were significantly different in transcription level. DEGs involved in chlorophyll biosynthesis, carotenoids biosynthesis, cutin, suberine, wax biosynthesis, photosynthesis, chloroplast development, photosynthesis-antenna proteins, photosystem I (PSI) and photosystem II (PSII) components, CO2 fixation, ribosomal structure, and biogenesis related genes were downregulated. Meanwhile, linoleic acid metabolism, siroheme biosynthesis, and carbon source of pigments biosynthesis through methylerythritol 4-phosphate (MEP) pathways were upregulated. Moreover, a total of 147 putative transcription factors were signification different expression, involving NAC, WRKY, bHLH, MYB and AP2/ERF, C2H2, GRAS, and bZIP family gene. Our results showed that the disturbed pigments biosynthesis result in yl color by altering the ratio of chlorophylls and carotenoids in yl mutants. The yl mutants may evoke other metabolic pathways to compensate for the photodamage caused by the insufficient structure and function of chloroplasts, such as enhanced MEP pathways and linoleic acid metabolism against oxidative stress. This research can provide a reference for the application of leaf color mutants in the future.
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Affiliation(s)
- Ying Gan
- National Center of China for Flowers Improvement, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yaping Kou
- National Center of China for Flowers Improvement, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Fei Yan
- National Center of China for Flowers Improvement, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiaofei Wang
- National Center of China for Flowers Improvement, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, China
| | - Hongqian Wang
- National Center of China for Flowers Improvement, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiangshang Song
- National Center of China for Flowers Improvement, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Min Zhang
- National Center of China for Flowers Improvement, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xin Zhao
- National Center of China for Flowers Improvement, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Ruidong Jia
- National Center of China for Flowers Improvement, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hong Ge
- National Center of China for Flowers Improvement, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Shuhua Yang
- National Center of China for Flowers Improvement, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
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14
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Wu Y, Wen J, Xia Y, Zhang L, Du H. Evolution and functional diversification of R2R3-MYB transcription factors in plants. HORTICULTURE RESEARCH 2022; 9:uhac058. [PMID: 35591925 PMCID: PMC9113232 DOI: 10.1093/hr/uhac058] [Citation(s) in RCA: 58] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 02/24/2022] [Indexed: 05/31/2023]
Abstract
R2R3-MYB genes (R2R3-MYBs) form one of the largest transcription factor gene families in the plant kingdom, with substantial structural and functional diversity. However, the evolutionary processes leading to this amazing functional diversity have not yet been clearly established. Recently developed genomic and classical molecular technologies have provided detailed insights into the evolutionary relationships and functions of plant R2R3-MYBs. Here, we review recent genome-level and functional analyses of plant R2R3-MYBs, with an emphasis on their evolution and functional diversification. In land plants, this gene family underwent a large expansion by whole genome duplications and small-scale duplications. Along with this population explosion, a series of functionally conserved or lineage-specific subfamilies/groups arose with roles in three major plant-specific biological processes: development and cell differentiation, specialized metabolism, and biotic and abiotic stresses. The rapid expansion and functional diversification of plant R2R3-MYBs are highly consistent with the increasing complexity of angiosperms. In particular, recently derived R2R3-MYBs with three highly homologous intron patterns (a, b, and c) are disproportionately related to specialized metabolism and have become the predominant subfamilies in land plant genomes. The evolution of plant R2R3-MYBs is an active area of research, and further studies are expected to improve our understanding of the evolution and functional diversification of this gene family.
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Affiliation(s)
- Yun Wu
- Department of Landscape Architecture, School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou, 310018, China
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Jing Wen
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China
| | - Yiping Xia
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Liangsheng Zhang
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Hai Du
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China
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15
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Massa S, Pagliarello R, Cemmi A, Di Sarcina I, Bombarely A, Demurtas OC, Diretto G, Paolini F, Petzold HE, Bliek M, Bennici E, Del Fiore A, De Rossi P, Spelt C, Koes R, Quattrocchio F, Benvenuto E. Modifying Anthocyanins Biosynthesis in Tomato Hairy Roots: A Test Bed for Plant Resistance to Ionizing Radiation and Antioxidant Properties in Space. FRONTIERS IN PLANT SCIENCE 2022; 13:830931. [PMID: 35283922 PMCID: PMC8909381 DOI: 10.3389/fpls.2022.830931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 01/07/2022] [Indexed: 06/14/2023]
Abstract
Gene expression manipulation of specific metabolic pathways can be used to obtain bioaccumulation of valuable molecules and desired quality traits in plants. A single-gene approach to impact different traits would be greatly desirable in agrospace applications, where several aspects of plant physiology can be affected, influencing growth. In this work, MicroTom hairy root cultures expressing a MYB-like transcription factor that regulates the biosynthesis of anthocyanins in Petunia hybrida (PhAN4), were considered as a testbed for bio-fortified tomato whole plants aimed at agrospace applications. Ectopic expression of PhAN4 promoted biosynthesis of anthocyanins, allowing to profile 5 major derivatives of delphinidin and petunidin together with pelargonidin and malvidin-based anthocyanins, unusual in tomato. Consistent with PhAN4 features, transcriptomic profiling indicated upregulation of genes correlated to anthocyanin biosynthesis. Interestingly, a transcriptome reprogramming oriented to positive regulation of cell response to biotic, abiotic, and redox stimuli was evidenced. PhAN4 hairy root cultures showed the significant capability to counteract reactive oxygen species (ROS) accumulation and protein misfolding upon high-dose gamma irradiation, which is among the most potent pro-oxidant stress that can be encountered in space. These results may have significance in the engineering of whole tomato plants that can benefit space agriculture.
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Affiliation(s)
- Silvia Massa
- Department for Sustainability, Biotechnology and Agro-Industry Division - Biotec Laboratory, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Rome, Italy
| | - Riccardo Pagliarello
- Department for Sustainability, Biotechnology and Agro-Industry Division - Biotec Laboratory, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Rome, Italy
- Department of Agriculture and Forest Sciences, University of Tuscia, Viterbo, Italy
| | - Alessia Cemmi
- Fusion and Nuclear Safety Technologies Department, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Rome, Italy
| | - Ilaria Di Sarcina
- Fusion and Nuclear Safety Technologies Department, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Rome, Italy
| | | | - Olivia Costantina Demurtas
- Department for Sustainability, Biotechnology and Agro-Industry Division - Biotec Laboratory, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Rome, Italy
| | - Gianfranco Diretto
- Department for Sustainability, Biotechnology and Agro-Industry Division - Biotec Laboratory, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Rome, Italy
| | - Francesca Paolini
- 'Regina Elena' National Cancer Institute, HPV-UNIT, Department of Research, Advanced Diagnostic and Technological Innovation, Translational Research Functional Departmental Area, Rome, Italy
| | - H Earl Petzold
- School of Plants and Environmental Sciences, Virginia Tech, Blacksburg, VA, United States
| | - Mattijs Bliek
- Department of Plant Development and (Epi)Genetics, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, Netherlands
| | - Elisabetta Bennici
- Department for Sustainability, Biotechnology and Agro-Industry Division - Biotec Laboratory, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Rome, Italy
| | - Antonella Del Fiore
- Department for Sustainability, Biotechnology and Agro-Industry Division - Agrifood Sustainability, Quality, and Safety Laboratory, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Rome, Italy
| | - Patrizia De Rossi
- Energy Efficiency Unit Department - Northern Area Regions Laboratory, Casaccia Research Center, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Rome, Italy
| | - Cornelis Spelt
- Department of Plant Development and (Epi)Genetics, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, Netherlands
| | - Ronald Koes
- Department of Plant Development and (Epi)Genetics, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, Netherlands
| | - Francesca Quattrocchio
- Department of Plant Development and (Epi)Genetics, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, Netherlands
| | - Eugenio Benvenuto
- Department for Sustainability, Biotechnology and Agro-Industry Division - Biotec Laboratory, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Rome, Italy
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16
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Shukla V, Barberon M. Building and breaking of a barrier: Suberin plasticity and function in the endodermis. CURRENT OPINION IN PLANT BIOLOGY 2021; 64:102153. [PMID: 34861611 DOI: 10.1016/j.pbi.2021.102153] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 11/08/2021] [Accepted: 11/08/2021] [Indexed: 05/20/2023]
Abstract
Plant cells coated with hydrophobic compounds constitute a protective barrier to control movement of materials through plant tissues. In roots, the endodermis develops two barriers: the Casparian strips establish an apoplastic barrier and suberin lamellae prevent diffusion through the plasma membrane. Suberin is a complex biopolymer and its deposition is highly responsive to the environment. While the enzymatic framework involved in suberin biosynthesis is well characterized, subsequent steps in suberin formation and regulation remained elusive. Recent publications, studying suberin from a cell biological perspective, have enriched our knowledge on suberin transport and polymerization in the cell wall. These studies have also elucidated the molecular mechanisms controlling suberin biosynthesis and regulation as well as its physiological role in plant abiotic and biotic interactions.
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Affiliation(s)
- Vinay Shukla
- Department of Botany and Plant Biology, University of Geneva, 30 Quai Ernest Ansermet, 1211 Geneva, Switzerland
| | - Marie Barberon
- Department of Botany and Plant Biology, University of Geneva, 30 Quai Ernest Ansermet, 1211 Geneva, Switzerland.
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17
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Shukla V, Han JP, Cléard F, Lefebvre-Legendre L, Gully K, Flis P, Berhin A, Andersen TG, Salt DE, Nawrath C, Barberon M. Suberin plasticity to developmental and exogenous cues is regulated by a set of MYB transcription factors. Proc Natl Acad Sci U S A 2021. [PMID: 34551972 DOI: 10.1101/2021.01.27.428267] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023] Open
Abstract
Suberin is a hydrophobic biopolymer that can be deposited at the periphery of cells, forming protective barriers against biotic and abiotic stress. In roots, suberin forms lamellae at the periphery of endodermal cells where it plays crucial roles in the control of water and mineral transport. Suberin formation is highly regulated by developmental and environmental cues. However, the mechanisms controlling its spatiotemporal regulation are poorly understood. Here, we show that endodermal suberin is regulated independently by developmental and exogenous signals to fine-tune suberin deposition in roots. We found a set of four MYB transcription factors (MYB41, MYB53, MYB92, and MYB93), each of which is individually regulated by these two signals and is sufficient to promote endodermal suberin. Mutation of these four transcription factors simultaneously through genome editing leads to a dramatic reduction in suberin formation in response to both developmental and environmental signals. Most suberin mutants analyzed at physiological levels are also affected in another endodermal barrier made of lignin (Casparian strips) through a compensatory mechanism. Through the functional analysis of these four MYBs, we generated plants allowing unbiased investigation of endodermal suberin function, without accounting for confounding effects due to Casparian strip defects, and were able to unravel specific roles of suberin in nutrient homeostasis.
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Affiliation(s)
- Vinay Shukla
- Department of Botany and Plant Biology, University of Geneva, 1211 Geneva, Switzerland
| | - Jian-Pu Han
- Department of Botany and Plant Biology, University of Geneva, 1211 Geneva, Switzerland
| | - Fabienne Cléard
- Department of Botany and Plant Biology, University of Geneva, 1211 Geneva, Switzerland
| | | | - Kay Gully
- Department of Molecular Plant Biology, University of Lausanne, 1015 Lausanne, Switzerland
| | - Paulina Flis
- Future Food Beacon of Excellence and School of Biosciences, University of Nottingham, NG7 2RD Nottingham, United Kingdom
| | - Alice Berhin
- Department of Molecular Plant Biology, University of Lausanne, 1015 Lausanne, Switzerland
| | - Tonni G Andersen
- Department of Molecular Plant Biology, University of Lausanne, 1015 Lausanne, Switzerland
| | - David E Salt
- Future Food Beacon of Excellence and School of Biosciences, University of Nottingham, NG7 2RD Nottingham, United Kingdom
| | - Christiane Nawrath
- Department of Molecular Plant Biology, University of Lausanne, 1015 Lausanne, Switzerland
| | - Marie Barberon
- Department of Botany and Plant Biology, University of Geneva, 1211 Geneva, Switzerland;
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18
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Shukla V, Han JP, Cléard F, Lefebvre-Legendre L, Gully K, Flis P, Berhin A, Andersen TG, Salt DE, Nawrath C, Barberon M. Suberin plasticity to developmental and exogenous cues is regulated by a set of MYB transcription factors. Proc Natl Acad Sci U S A 2021; 118:e2101730118. [PMID: 34551972 PMCID: PMC8488582 DOI: 10.1073/pnas.2101730118] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/22/2021] [Indexed: 11/18/2022] Open
Abstract
Suberin is a hydrophobic biopolymer that can be deposited at the periphery of cells, forming protective barriers against biotic and abiotic stress. In roots, suberin forms lamellae at the periphery of endodermal cells where it plays crucial roles in the control of water and mineral transport. Suberin formation is highly regulated by developmental and environmental cues. However, the mechanisms controlling its spatiotemporal regulation are poorly understood. Here, we show that endodermal suberin is regulated independently by developmental and exogenous signals to fine-tune suberin deposition in roots. We found a set of four MYB transcription factors (MYB41, MYB53, MYB92, and MYB93), each of which is individually regulated by these two signals and is sufficient to promote endodermal suberin. Mutation of these four transcription factors simultaneously through genome editing leads to a dramatic reduction in suberin formation in response to both developmental and environmental signals. Most suberin mutants analyzed at physiological levels are also affected in another endodermal barrier made of lignin (Casparian strips) through a compensatory mechanism. Through the functional analysis of these four MYBs, we generated plants allowing unbiased investigation of endodermal suberin function, without accounting for confounding effects due to Casparian strip defects, and were able to unravel specific roles of suberin in nutrient homeostasis.
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Affiliation(s)
- Vinay Shukla
- Department of Botany and Plant Biology, University of Geneva, 1211 Geneva, Switzerland
| | - Jian-Pu Han
- Department of Botany and Plant Biology, University of Geneva, 1211 Geneva, Switzerland
| | - Fabienne Cléard
- Department of Botany and Plant Biology, University of Geneva, 1211 Geneva, Switzerland
| | | | - Kay Gully
- Department of Molecular Plant Biology, University of Lausanne, 1015 Lausanne, Switzerland
| | - Paulina Flis
- Future Food Beacon of Excellence and School of Biosciences, University of Nottingham, NG7 2RD Nottingham, United Kingdom
| | - Alice Berhin
- Department of Molecular Plant Biology, University of Lausanne, 1015 Lausanne, Switzerland
| | - Tonni G Andersen
- Department of Molecular Plant Biology, University of Lausanne, 1015 Lausanne, Switzerland
| | - David E Salt
- Future Food Beacon of Excellence and School of Biosciences, University of Nottingham, NG7 2RD Nottingham, United Kingdom
| | - Christiane Nawrath
- Department of Molecular Plant Biology, University of Lausanne, 1015 Lausanne, Switzerland
| | - Marie Barberon
- Department of Botany and Plant Biology, University of Geneva, 1211 Geneva, Switzerland;
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19
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Wang X, Niu Y, Zheng Y. Multiple Functions of MYB Transcription Factors in Abiotic Stress Responses. Int J Mol Sci 2021; 22:ijms22116125. [PMID: 34200125 PMCID: PMC8201141 DOI: 10.3390/ijms22116125] [Citation(s) in RCA: 153] [Impact Index Per Article: 51.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/20/2021] [Accepted: 05/25/2021] [Indexed: 01/25/2023] Open
Abstract
Plants face a more volatile environment than other organisms because of their immobility, and they have developed highly efficient mechanisms to adapt to stress conditions. Transcription factors, as an important part of the adaptation process, are activated by different signals and are responsible for the expression of stress-responsive genes. MYB transcription factors, as one of the most widespread transcription factor families in plants, participate in plant development and responses to stresses by combining with MYB cis-elements in promoters of target genes. MYB transcription factors have been extensively studied and have proven to be critical in the biosynthesis of secondary metabolites in plants, including anthocyanins, flavonols, and lignin. Multiple studies have now shown that MYB proteins play diverse roles in the responses to abiotic stresses, such as drought, salt, and cold stresses. However, the regulatory mechanism of MYB proteins in abiotic stresses is still not well understood. In this review, we will focus mainly on the function of Arabidopsis MYB transcription factors in abiotic stresses, especially how MYB proteins participate in these stress responses. We also pay attention to how the MYB proteins are regulated in these processes at both the transcript and protein levels.
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20
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Yang T, Ma H, Li Y, Zhang Y, Zhang J, Wu T, Song T, Yao Y, Tian J. Apple MPK4 mediates phosphorylation of MYB1 to enhance light-induced anthocyanin accumulation. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 106:1728-1745. [PMID: 33835607 DOI: 10.1111/tpj.15267] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/25/2021] [Accepted: 03/26/2021] [Indexed: 05/04/2023]
Abstract
Anthocyanins are plant pigments with diverse biological functions that contribute to fruit quality and are beneficial to human health. Anthocyanin accumulation can be influenced by environmental signals, such as light, and plants have developed sophisticated systems to receive and transduce these signals. However, the associated molecular mechanisms are not well understood. In this study, we investigated the potential function of mitogen-activated protein kinases, which are members of the light signaling pathway, during light-induced anthocyanin accumulation in apple (Malus domestica) fruit peels. An antibody array and yeast two-hybrid screen indicated that proteins encoded by two MdMPK4 genes are light-activated and interact with the transcription factor and anthocyanin biosynthesis regulator MdMYB1. A phosphorylation assay showed that the MdMPK4 proteins phosphorylate MdMYB1, thereby increasing its stability under light conditions. Transient MdMPK4 and MdMYB1 overexpression assays further revealed that light-induced anthocyanin accumulation relies on MdMPK4 kinase activity, which is required for maximum MdMYB1 activity. Based on the expression of the chromosome 6 allele MdMPK4-06G under light conditions and the presence of light response elements in the MdMPK4-06G promoter, we concluded that it is more responsive to light than the chromosome 14 allele MdMPK4-14G. These results suggest a potential biotechnological strategy for increasing fruit anthocyanin content via light induction.
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Affiliation(s)
- Tuo Yang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China
- Plant Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Huaying Ma
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China
- Plant Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Yu Li
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China
- Plant Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Yan Zhang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China
- Plant Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Jie Zhang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China
- Plant Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Ting Wu
- College of Horticulture, China Agricultural University, Beijing, China
| | - Tingting Song
- Plant Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Yuncong Yao
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China
- Plant Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Ji Tian
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China
- Plant Science and Technology College, Beijing University of Agriculture, Beijing, China
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21
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Li D, Sun Q, Zhang G, Zhai L, Li K, Feng Y, Wu T, Zhang X, Xu X, Wang Y, Han Z. MxMPK6-2-bHLH104 interaction is involved in reactive oxygen species signaling in response to iron deficiency in apple rootstock. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:1919-1932. [PMID: 33216933 DOI: 10.1093/jxb/eraa547] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 11/15/2020] [Indexed: 05/16/2023]
Abstract
Iron (Fe) is a trace element necessary for plant growth. Many land plants have evolved a set of mechanisms associated with the Fe absorption process to deal with the problem of insufficient Fe supply in the soil. During Fe absorption, reactive oxygen species (ROS) can be used as a signal to initiate a response to stress caused by Fe deficiency. However, the molecular mechanisms underlying the involvement of ROS in the Fe deficiency stress response remains unclear. In this study, we have identified a kinase, MxMPK6-2, from Malus xiaojinensis, an apple rootstock that is highly efficient at Fe absorption. MxMPK6-2 has been shown to be responsive to ROS signals during Fe deficiency, and MxMPK6-2 overexpression in apple calli enhanced its tolerance to Fe deficiency. We further screened for proteins in the Fe absorption pathway and identified MxbHLH104, a transcription factor which interacts with MxMPK6-2. MxbHLH104 can be phosphorylated by MxMPK6-2 in vivo, and we confirmed that its phosphorylation increased Fe absorption in apple calli under Fe deficiency, with the presence of ROS promoting this process. Overall, we have demonstrated that MxMPK6-2 is responsive to ROS signaling during Fe deficiency, and is able to control its response by regulating MxbHLH104.
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Affiliation(s)
- Duyue Li
- College of Horticulture, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Nutrition and Physiology), Ministry of Agriculture, Beijing, P. R. China
| | - Qiran Sun
- College of Horticulture, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Nutrition and Physiology), Ministry of Agriculture, Beijing, P. R. China
| | - Guifen Zhang
- College of Horticulture, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Nutrition and Physiology), Ministry of Agriculture, Beijing, P. R. China
| | - Longmei Zhai
- College of Horticulture, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Nutrition and Physiology), Ministry of Agriculture, Beijing, P. R. China
| | - Keting Li
- College of Horticulture, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Nutrition and Physiology), Ministry of Agriculture, Beijing, P. R. China
| | - Yi Feng
- College of Horticulture, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Nutrition and Physiology), Ministry of Agriculture, Beijing, P. R. China
| | - Ting Wu
- College of Horticulture, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Nutrition and Physiology), Ministry of Agriculture, Beijing, P. R. China
| | - Xinzhong Zhang
- College of Horticulture, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Nutrition and Physiology), Ministry of Agriculture, Beijing, P. R. China
| | - Xuefeng Xu
- College of Horticulture, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Nutrition and Physiology), Ministry of Agriculture, Beijing, P. R. China
| | - Yi Wang
- College of Horticulture, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Nutrition and Physiology), Ministry of Agriculture, Beijing, P. R. China
| | - Zhenhai Han
- College of Horticulture, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Nutrition and Physiology), Ministry of Agriculture, Beijing, P. R. China
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22
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Park HC, Park BO, Kim HS, Kim SH, Lee SW, Chung WS. AtMPK6-induced phosphorylation of AtERF72 enhances its DNA binding activity and interaction with TGA4/OBF4 in Arabidopsis. PLANT BIOLOGY (STUTTGART, GERMANY) 2021; 23:11-20. [PMID: 33073469 DOI: 10.1111/plb.13196] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 10/09/2020] [Indexed: 06/11/2023]
Abstract
The ethylene-responsive element binding factor (ERF) family is a large family of transcription factors involved in plant development and environmental stress responses. We previously reported the identification of 29 putative substrates of Mitogen-activated Protein Kinase3 (AtMPK3), AtMPK4 and AtMPK6, based on a solid-phase phosphorylation screening using a lambda phage expression library in Arabidopsis thaliana. In this study, a putative MPK substrate, AtERF72 (At3g16770), was strongly phosphorylated by AtMPK6 on the serine residue at position 151 (Ser151). AtERF72 binds to the GCC box (AGCCGCC) in the promoters of several pathogenesis-related (PR) genes and activates their transcription. We also show that the DNA-binding activity of AtERF72 is enhanced upon phosphorylation by AtMPK6 in vitro. In addition, transient co-expression experiments in Arabidopsis protoplasts revealed that effector constructs expressing a mutant variant of AtERF72, AtERF72S151D (carrying a Ser to aspartic acid [Asp] substitution at amino acid position 151) showed higher expression of the β-glucuronidase (GUS) reporter gene driven by the GCC box element than effector constructs expressing the wild-type AtERF72. Furthermore, yeast two-hybrid assays revealed that the interaction between AtERF72S151D and TGA4/OBF4 was stronger than that between wild-type AtERF72 and TGA4/OBF4. Since AtERF72S151D is equivalent to AtERF72 phosphorylated by AtMPK6 at Ser151, these results suggest that the phosphorylation of AtERF72 by AtMPK6 triggers an event of transcriptional regulation from defence signalling in Arabidopsis.
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Affiliation(s)
- H C Park
- Team of Vulnerable Ecological Research, Division of Climate and Ecology, Bureau of Conservation & Assessment Research, National Institute of Ecology, Seocheon, Republic of Korea
| | - B O Park
- Division of Applied Life Science (BK21 Plus Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Republic of Korea
| | - H S Kim
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - S H Kim
- Division of Applied Life Science (BK21 Plus Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Republic of Korea
| | - S W Lee
- Department of Agronomy & Medicinal Plant Resources, Gyeongnam National University of Science & Technology, Jinju, Republic of Korea
| | - W S Chung
- Division of Applied Life Science (BK21 Plus Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Republic of Korea
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23
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Han R, Wei Y, Xie Y, Liu L, Jiang C, Yu Y. Quantitative phosphoproteomic analysis provides insights into the aluminum-responsiveness of Tamba black soybean. PLoS One 2020; 15:e0237845. [PMID: 32813721 PMCID: PMC7437914 DOI: 10.1371/journal.pone.0237845] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 08/04/2020] [Indexed: 01/01/2023] Open
Abstract
Aluminum (Al3+) toxicity is one of the most important limitations to agricultural production worldwide. The overall response of plants to Al3+ stress has been documented, but the contribution of protein phosphorylation to Al3+ detoxicity and tolerance in plants is unclear. Using a combination of tandem mass tag (TMT) labeling, immobilized metal affinity chromatography (IMAC) enrichment and liquid chromatography-tandem mass spectrometry (LC-MS/MS), Al3+-induced phosphoproteomic changes in roots of Tamba black soybean (TBS) were investigated in this study. The Data collected in this study are available via ProteomeXchange with the identifier PXD019807. After the Al3+ treatment, 189 proteins harboring 278 phosphosites were significantly changed (fold change > 1.2 or < 0.83, p < 0.05), with 88 upregulated, 96 downregulated and 5 up-/downregulated. Enrichment and protein interaction analyses revealed that differentially phosphorylated proteins (DPPs) under the Al3+ treatment were mainly related to G-protein-mediated signaling, transcription and translation, transporters and carbohydrate metabolism. Particularly, DPPs associated with root growth inhibition or citric acid synthesis were identified. The results of this study provide novel insights into the molecular mechanisms of TBS post-translational modifications in response to Al3+ stress.
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Affiliation(s)
- Rongrong Han
- College of Animal Science and Technology, Southwest University, Beibei, Chongqing, China
| | - Yunmin Wei
- College of Animal Science and Technology, Southwest University, Beibei, Chongqing, China
| | - Yonghong Xie
- College of Animal Science and Technology, Southwest University, Beibei, Chongqing, China
| | - Lusheng Liu
- College of Animal Science and Technology, Southwest University, Beibei, Chongqing, China
| | - Caode Jiang
- College of Animal Science and Technology, Southwest University, Beibei, Chongqing, China
| | - Yongxiong Yu
- College of Animal Science and Technology, Southwest University, Beibei, Chongqing, China
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24
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Millard PS, Weber K, Kragelund BB, Burow M. Specificity of MYB interactions relies on motifs in ordered and disordered contexts. Nucleic Acids Res 2019; 47:9592-9608. [PMID: 31400117 PMCID: PMC6765112 DOI: 10.1093/nar/gkz691] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Revised: 07/18/2019] [Accepted: 08/08/2019] [Indexed: 02/05/2023] Open
Abstract
Physical interactions between members of the MYB and bHLH transcription factor (TF) families regulate many important biological processes in plants. Not all reported MYB-bHLH interactions can be explained by the known binding sites in the R3 repeat of the MYB DNA-binding domain. Noteworthy, most of the sequence diversity of MYB TFs lies in their non-MYB regions, which contain orphan small subgroup-defining motifs not yet linked to molecular functions. Here, we identified the motif mediating interaction between MYB TFs from subgroup 12 and their bHLH partners. Unlike other known MYB-bHLH interactions, the motif locates to the centre of the predicted disordered non-MYB region. We characterised the core motif, which enabled accurate prediction of previously unknown bHLH-interacting MYB TFs in Arabidopsis thaliana, and we confirmed its functional importance in planta. Our results indicate a correlation between the MYB-bHLH interaction affinity and the phenotypic output controlled by the TF complex. The identification of an interaction motif outside R3 indicates that MYB-bHLH interactions must have arisen multiple times, independently and suggests many more motifs of functional relevance to be harvested from subgroup-specific studies.
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Affiliation(s)
- Peter S Millard
- DynaMo Center, Department of Plant and Environmental Sciences, University of Copenhagen, 1871 Frederiksberg C, Denmark
- Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, University of Copenhagen, 1871 Frederiksberg C, Denmark
| | - Konrad Weber
- DynaMo Center, Department of Plant and Environmental Sciences, University of Copenhagen, 1871 Frederiksberg C, Denmark
- Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, University of Copenhagen, 1871 Frederiksberg C, Denmark
| | - Birthe B Kragelund
- Structural Biology and NMR Laboratory, Department of Biology, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Meike Burow
- DynaMo Center, Department of Plant and Environmental Sciences, University of Copenhagen, 1871 Frederiksberg C, Denmark
- Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, University of Copenhagen, 1871 Frederiksberg C, Denmark
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25
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Millard PS, Kragelund BB, Burow M. R2R3 MYB Transcription Factors - Functions outside the DNA-Binding Domain. TRENDS IN PLANT SCIENCE 2019; 24:934-946. [PMID: 31358471 DOI: 10.1016/j.tplants.2019.07.003] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 07/02/2019] [Accepted: 07/05/2019] [Indexed: 05/20/2023]
Abstract
Several transcription factor (TF) families, including the MYB family, regulate a wide array of biological processes. TFs contain DNA-binding domains (DBDs) and regulatory regions; although information on protein structure is scarce for plant MYB TFs, various in silico methods suggest that the non-MYB regions contain extensive intrinsically disordered regions (IDRs). Although IDRs do not fold into stable globular structures, they comprise functional regions including interaction motifs, and recent research has shown that IDRs perform crucial biological roles. We map here domain organization, disorder predictions, and functional regions across the entire Arabidopsis thaliana R2R3 MYB TF family, and highlight where an increased research focus will be necessary to shape a new understanding of structure-function relationships in plant TFs.
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Affiliation(s)
- Peter S Millard
- DynaMo Center, Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark; Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Birthe B Kragelund
- Structural Biology and NMR Laboratory, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Meike Burow
- DynaMo Center, Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark; Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark.
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26
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Sadhukhan A, Enomoto T, Kobayashi Y, Watanabe T, Iuchi S, Kobayashi M, Sahoo L, Yamamoto YY, Koyama H. Sensitive to Proton Rhizotoxicity1 Regulates Salt and Drought Tolerance of Arabidopsis thaliana through Transcriptional Regulation of CIPK23. PLANT & CELL PHYSIOLOGY 2019; 60:2113-2126. [PMID: 31241160 DOI: 10.1093/pcp/pcz120] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 06/11/2019] [Indexed: 05/10/2023]
Abstract
The transcription factor sensitive to proton rhizotoxicity 1 (STOP1) regulates multiple stress tolerances. In this study, we confirmed its involvement in NaCl and drought tolerance. The root growth of the T-DNA insertion mutant of STOP1 (stop1) was sensitive to NaCl-containing solidified MS media. Transcriptome analysis of stop1 under NaCl stress revealed that STOP1 regulates several genes related to salt tolerance, including CIPK23. Among all available homozygous T-DNA insertion mutants of the genes suppressed in stop1, only cipk23 showed a NaCl-sensitive root growth phenotype comparable to stop1. The CIPK23 promoter had a functional STOP1-binding site, suggesting a strong CIPK23 suppression led to NaCl sensitivity of stop1. This possibility was supported by in planta complementation of CIPK23 in the stop1 background, which rescued the short root phenotype under NaCl. Both stop1 and cipk23 exhibited a drought tolerant phenotype and increased abscisic acid-regulated stomatal closure, while the complementation of CIPK23 in stop1 reversed these traits. Our findings uncover additional pleiotropic roles of STOP1 mediated by CIPK23, which regulates various ion transporters including those regulating K+-homeostasis, which may induce a trade-off between drought tolerance and other traits.
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Affiliation(s)
- Ayan Sadhukhan
- Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, Japan
| | - Takuo Enomoto
- Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, Japan
| | - Yuriko Kobayashi
- Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, Japan
| | - Toshihiro Watanabe
- Research Faculty of Agriculture, Hokkaido University, Kita-9, Nishi-9, Kitaku, Sapporo, Japan
| | - Satoshi Iuchi
- Experimental Plant Division, RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan
| | - Masatomo Kobayashi
- Experimental Plant Division, RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan
| | - Lingaraj Sahoo
- Department of Biosciences and bioengineering, Indian Institute of Technology Guwahati, Guwahati, India
| | - Yoshiharu Y Yamamoto
- Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, Japan
| | - Hiroyuki Koyama
- Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, Japan
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27
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Gao W, Feng Z, Bai Q, He J, Wang Y. Melatonin-Mediated Regulation of Growth and Antioxidant Capacity in Salt-Tolerant Naked Oat under Salt Stress. Int J Mol Sci 2019; 20:E1176. [PMID: 30866540 PMCID: PMC6429221 DOI: 10.3390/ijms20051176] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 03/01/2019] [Accepted: 03/01/2019] [Indexed: 11/17/2022] Open
Abstract
Melatonin (MT; N-acetyl-5-methoxytryptamine) is a pleiotropic signaling molecule that has been demonstrated to play an important role in plant growth, development, and regulation of environmental stress responses. Studies have been conducted on the role of the exogenous application of MT in a few species, but the potential mechanisms of MT-mediated stress tolerance under salt stress are still largely unknown. In this study, naked oat seedlings under salt stress (150 mM NaCl) were pretreated with two different concentrations of MT (50 and 100 μM), and the effects of MT on the growth and antioxidant capacity of naked oat seedlings were analyzed to explore the regulatory effect of MT on salt tolerance. The results showed that pretreating with different concentrations of MT promoted the growth of seedlings in response to 150 mM NaCl. Different concentrations of MT reduced hydrogen peroxide, superoxide anion, and malondialdehyde contents. The exogenous application of MT also increased superoxide dismutase, peroxidase, catalase, and ascorbate peroxide activities. Chlorophyll content, leaf area, leaf volume, and proline increased in the leaves of naked oat seedlings under 150 mM NaCl stress. MT upregulated the expression levels of the lipid peroxidase genes lipoxygenase and peroxygenase, a chlorophyll biosynthase gene (ChlG), the mitogen-activated protein kinase genes Asmap1 and Aspk11, and the transcription factor genes (except DREB2), NAC, WRKY1, WRKY3, and MYB in salt-exposed MT-pretreated seedlings when compared with seedlings exposed to salt stress alone. These results demonstrate an important role of MT in the relief of salt stress and, therefore, provide a reference for managing salinity in naked oat.
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Affiliation(s)
- Wenying Gao
- Key Laboratory of Biotechnology of Shannxi Province, Key Laboratory of Resource Biology and Biothchnology in Western China (Ministry of Education), College of Life Science, Northwest University, Xi'an 710069, China.
| | - Zheng Feng
- Key Laboratory of Biotechnology of Shannxi Province, Key Laboratory of Resource Biology and Biothchnology in Western China (Ministry of Education), College of Life Science, Northwest University, Xi'an 710069, China.
| | - Qingqing Bai
- Key Laboratory of Biotechnology of Shannxi Province, Key Laboratory of Resource Biology and Biothchnology in Western China (Ministry of Education), College of Life Science, Northwest University, Xi'an 710069, China.
| | - Jinjin He
- Key Laboratory of Biotechnology of Shannxi Province, Key Laboratory of Resource Biology and Biothchnology in Western China (Ministry of Education), College of Life Science, Northwest University, Xi'an 710069, China.
| | - Yingjuan Wang
- Key Laboratory of Biotechnology of Shannxi Province, Key Laboratory of Resource Biology and Biothchnology in Western China (Ministry of Education), College of Life Science, Northwest University, Xi'an 710069, China.
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28
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Cui J, Jiang N, Zhou X, Hou X, Yang G, Meng J, Luan Y. Tomato MYB49 enhances resistance to Phytophthora infestans and tolerance to water deficit and salt stress. PLANTA 2018; 248:1487-1503. [PMID: 30132153 DOI: 10.1007/s00425-018-2987-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 08/15/2018] [Indexed: 05/20/2023]
Abstract
MYB49-overexpressing tomato plants showed significant resistance to Phytophthora infestans and tolerance to drought and salt stresses. This finding reveals the potential application of tomato MYB49 in future molecular breeding. Biotic and abiotic stresses severely reduce the productivity of tomato worldwide. Therefore, it is necessary to find key genes to simultaneously improve plant resistance to pathogens and tolerance to various abiotic stresses. In this study, based on homologous relationships with Arabidopsis R2R3-MYBs (AtMYBs) involved in responses to biotic and abiotic stresses, we identified a total of 24 R2R3-MYB transcription factors in the tomato genome. Among these tomato R2R3-MYBs, MYB49 (Solyc10g008700.1) was clustered into subgroup 11 by phylogenetic analysis, and its expression level was significantly induced after treatment with P. infestans, NaCl and PEG6000. Overexpression of MYB49 in tomato significantly enhanced the resistance of tomato to P. infestans, as evidenced by decreases in the number of necrotic cells, sizes of lesion, abundance of P. infestans, and disease index. Likewise, MYB49-overexpressing transgenic tomato plants also displayed increased tolerance to drought and salt stresses. Compared to WT plants, the accumulation of reactive oxygen species (ROS), malonaldehyde content, and relative electrolyte leakage was decreased, and peroxidase activity, superoxide dismutase activity, chlorophyll content, and photosynthetic rate were increased in MYB49-overexpressing tomato plants under P. infestans, salt or drought stress. These results suggested that tomato MYB49, as a positive regulator, could enhance the capacity to scavenge ROS, inhibit cell membrane damage and cell death, and protect chloroplasts, resulting in an improvement in resistance to P. infestans and tolerance to salt and drought stresses, and they provide a candidate gene for tomato breeding to enhance biotic stress resistance and abiotic stress tolerance.
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Affiliation(s)
- Jun Cui
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, 116024, China
| | - Ning Jiang
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, 116024, China
| | - Xiaoxu Zhou
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, 116024, China
| | - Xinxin Hou
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, 116024, China
| | - Guanglei Yang
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, 116024, China
| | - Jun Meng
- School of Computer Science and Technology, Dalian University of Technology, Dalian, 116024, China.
| | - Yushi Luan
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, 116024, China.
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29
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Dóczi R, Bögre L. The Quest for MAP Kinase Substrates: Gaining Momentum. TRENDS IN PLANT SCIENCE 2018; 23:918-932. [PMID: 30143312 DOI: 10.1016/j.tplants.2018.08.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 08/01/2018] [Accepted: 08/03/2018] [Indexed: 06/08/2023]
Abstract
Mitogen-activated protein kinase (MAPK) pathways are versatile signaling mechanisms in all eukaryotes. Their signaling outputs are defined by the protein substrates phosphorylated by MAPKs. An expanding list of substrates has been identified by high-throughput screens and targeted approaches in plants. The majority of these are phosphorylated by MPK3/6, and a few by MPK4, which are the best-characterized plant MAPKs, participating in the regulation of numerous biological processes. The identified substrates clearly represent the functional diversity of MAPKs: they are associated with pathogen defense, abiotic stress responses, ethylene signaling, and various developmental functions. Understanding their outputs is integral to unraveling the complex regulatory mechanisms of MAPK cascades. We review here methodological approaches and provide an overview of known MAPK substrates.
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Affiliation(s)
- Róbert Dóczi
- Institute of Agriculture, Centre for Agricultural Research of the Hungarian Academy of Sciences, Brunszvik utca 2, H-2462 Martonvásár, Hungary.
| | - László Bögre
- School of Biological Sciences and Centre for Systems and Synthetic Biology, Royal Holloway, University of London, Egham TW20 0EX, UK
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30
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Leaf wax trait in crops for drought and biotic stress tolerance: regulators of epicuticular wax synthesis and role of small RNAs. ACTA ACUST UNITED AC 2017. [DOI: 10.1007/s40502-017-0333-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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31
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Kim SH, Kim HS, Bahk S, An J, Yoo Y, Kim JY, Chung WS. Phosphorylation of the transcriptional repressor MYB15 by mitogen-activated protein kinase 6 is required for freezing tolerance in Arabidopsis. Nucleic Acids Res 2017; 45:6613-6627. [PMID: 28510716 PMCID: PMC5499865 DOI: 10.1093/nar/gkx417] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 04/25/2017] [Accepted: 05/15/2017] [Indexed: 12/30/2022] Open
Abstract
The expression of CBF (C-repeat-binding factor) genes is required for freezing tolerance in Arabidopsis thaliana. CBFs are positively regulated by INDUCER OF CBF EXPRESSION1 (ICE1) and negatively regulated by MYB15. These transcription factors directly interact with specific elements in the CBF promoters. Mitogen-activated protein kinase (MAPK/MPK) cascades function upstream to regulate CBFs. However, the mechanism by which MPKs control CBF expression during cold stress signaling remains unknown. This study showed that the activity of MYB15, a transcriptional repressor of cold signaling, is regulated by MPK6-mediated phosphorylation. MYB15 specifically interacts with MPK6, and MPK6 phosphorylates MYB15 on Ser168. MPK6-induced phosphorylation reduced the affinity of MYB15 binding to the CBF3 promoter and mutation of its phosphorylation site (MYB15S168A) enhanced the transcriptional repression of CBF3 by MYB15. Furthermore, transgenic plants overexpressing MYB15S168A showed significantly reduced CBF transcript levels in response to cold stress, compared with plants overexpressing MYB15. The MYB15S168A-overexpressing plants were also more sensitive to freezing than MYB15-overexpressing plants. These results suggest that MPK6-mediated regulation of MYB15 plays an important role in cold stress signaling in Arabidopsis.
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Affiliation(s)
- Sun Ho Kim
- Division of Applied Life Science (BK21 plus program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 52828, Korea
| | - Ho Soo Kim
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Korea
| | - Sunghwa Bahk
- Division of Applied Life Science (BK21 plus program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 52828, Korea
| | - Jonguk An
- Division of Applied Life Science (BK21 plus program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 52828, Korea
| | - Yeji Yoo
- Division of Applied Life Science (BK21 plus program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 52828, Korea
| | - Jae-Yean Kim
- Division of Applied Life Science (BK21 plus program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 52828, Korea
| | - Woo Sik Chung
- Division of Applied Life Science (BK21 plus program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 52828, Korea
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Wei S, Bian Y, Zhao Q, Chen S, Mao J, Song C, Cheng K, Xiao Z, Zhang C, Ma W, Zou H, Ye M, Dai S. Salinity-Induced Palmella Formation Mechanism in Halotolerant Algae Dunaliella salina Revealed by Quantitative Proteomics and Phosphoproteomics. FRONTIERS IN PLANT SCIENCE 2017; 8:810. [PMID: 28588593 PMCID: PMC5441111 DOI: 10.3389/fpls.2017.00810] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 04/30/2017] [Indexed: 05/05/2023]
Abstract
Palmella stage is critical for some unicellular algae to survive in extreme environments. The halotolerant algae Dunaliella salina is a good single-cell model for studying plant adaptation to high salinity. To investigate the molecular adaptation mechanism in salinity shock-induced palmella formation, we performed a comprehensive physiological, proteomics and phosphoproteomics study upon palmella formation of D. salina using dimethyl labeling and Ti4+-immobilized metal ion affinity chromatography (IMAC) proteomic approaches. We found that 151 salinity-responsive proteins and 35 salinity-responsive phosphoproteins were involved in multiple signaling and metabolic pathways upon palmella formation. Taken together with photosynthetic parameters and enzyme activity analyses, the patterns of protein accumulation and phosphorylation level exhibited the mechanisms upon palmella formation, including dynamics of cytoskeleton and cell membrane curvature, accumulation and transport of exopolysaccharides, photosynthesis and energy supplying (i.e., photosystem II stability and activity, cyclic electron transport, and C4 pathway), nuclear/chloroplastic gene expression regulation and protein processing, reactive oxygen species homeostasis, and salt signaling transduction. The salinity-responsive protein-protein interaction (PPI) networks implied that signaling and protein synthesis and fate are crucial for modulation of these processes. Importantly, the 3D structure of phosphoprotein clearly indicated that the phosphorylation sites of eight proteins were localized in the region of function domain.
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Affiliation(s)
- Sijia Wei
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration in Oil Field, Alkali Soil Natural Environmental Science Center, Ministry of Education, Northeast Forestry UniversityHarbin, China
| | - Yangyang Bian
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of SciencesDalian, China
| | - Qi Zhao
- College of Life and Environmental Sciences, Shanghai Normal UniversityShanghai, China
| | - Sixue Chen
- Department of Biology, Genetics Institute, Plant Molecular and Cellular Biology Program, Interdisciplinary Center for Biotechnology Research, University of FloridaGainesville, FL, Unites States
| | - Jiawei Mao
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of SciencesDalian, China
| | - Chunxia Song
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of SciencesDalian, China
| | - Kai Cheng
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of SciencesDalian, China
| | - Zhen Xiao
- College of Life and Environmental Sciences, Shanghai Normal UniversityShanghai, China
| | - Chuanfang Zhang
- College of Life and Environmental Sciences, Shanghai Normal UniversityShanghai, China
| | - Weimin Ma
- College of Life and Environmental Sciences, Shanghai Normal UniversityShanghai, China
| | - Hanfa Zou
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of SciencesDalian, China
| | - Mingliang Ye
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of SciencesDalian, China
- *Correspondence: Mingliang Ye
| | - Shaojun Dai
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration in Oil Field, Alkali Soil Natural Environmental Science Center, Ministry of Education, Northeast Forestry UniversityHarbin, China
- College of Life and Environmental Sciences, Shanghai Normal UniversityShanghai, China
- Shaojun Dai
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Ma F, Ni L, Liu L, Li X, Zhang H, Zhang A, Tan M, Jiang M. ZmABA2, an interacting protein of ZmMPK5, is involved in abscisic acid biosynthesis and functions. PLANT BIOTECHNOLOGY JOURNAL 2016; 14:771-82. [PMID: 26096642 DOI: 10.1111/pbi.12427] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Revised: 04/24/2015] [Accepted: 04/27/2015] [Indexed: 05/08/2023]
Abstract
In maize (Zea mays), the mitogen-activated protein kinase ZmMPK5 has been shown to be involved in abscisic acid (ABA)-induced antioxidant defence and to enhance the tolerance of plants to drought, salt stress and oxidative stress. However, the underlying molecular mechanisms are poorly understood. Here, using ZmMPK5 as bait in yeast two-hybrid screening, a protein interacting with ZmMPK5 named ZmABA2, which belongs to a member of the short-chain dehydrogenase/reductase family, was identified. Pull-down assay and bimolecular fluorescence complementation analysis and co-immunoprecipitation test confirmed that ZmMPK5 interacts with ZmABA2 in vitro and in vivo. Phosphorylation of Ser173 in ZmABA2 by ZmMPK5 was shown to increase the activity of ZmABA2 and the protein stability. Various abiotic stimuli induced the expression of ZmABA2 in leaves of maize plants. Pharmacological, biochemical and molecular biology and genetic analyses showed that both ZmMPK5 and ZmABA2 coordinately regulate the content of ABA. Overexpression of ZmABA2 in tobacco plants was found to elevate the content of ABA, regulate seed germination and root growth under drought and salt stress and enhance the tolerance of tobacco plants to drought and salt stress. These results suggest that ZmABA2 is a direct target of ZmMPK5 and is involved in ABA biosynthesis and functions.
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Affiliation(s)
- Fangfang Ma
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
- College of Agriculture, Shanxi Agricultural University, Taigu, China
| | - Lan Ni
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Libo Liu
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Xi Li
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Huan Zhang
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Aying Zhang
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Mingpu Tan
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Mingyi Jiang
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
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Plant MYB Transcription Factors: Their Role in Drought Response Mechanisms. Int J Mol Sci 2015; 16:15811-51. [PMID: 26184177 PMCID: PMC4519927 DOI: 10.3390/ijms160715811] [Citation(s) in RCA: 229] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 06/18/2015] [Accepted: 06/25/2015] [Indexed: 11/17/2022] Open
Abstract
Water scarcity is one of the major causes of poor plant performance and limited crop yields worldwide and it is the single most common cause of severe food shortage in developing countries. Several molecular networks involved in stress perception, signal transduction and stress responses in plants have been elucidated so far. Transcription factors are major players in water stress signaling. In recent years, different MYB transcription factors, mainly in Arabidopsis thaliana (L.) Heynh. but also in some crops, have been characterized for their involvement in drought response. For some of them there is evidence supporting a specific role in response to water stress, such as the regulation of stomatal movement, the control of suberin and cuticular waxes synthesis and the regulation of flower development. Moreover, some of these genes have also been characterized for their involvement in other abiotic or biotic stresses, an important feature considering that in nature, plants are often simultaneously subjected to multiple rather than single environmental perturbations. This review summarizes recent studies highlighting the role of the MYB family of transcription factors in the adaptive responses to drought stress. The practical application value of MYBs in crop improvement, such as stress tolerance engineering, is also discussed.
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35
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Bigeard J, Colcombet J, Hirt H. Signaling mechanisms in pattern-triggered immunity (PTI). MOLECULAR PLANT 2015; 8:521-39. [PMID: 25744358 DOI: 10.1016/j.molp.2014.12.022] [Citation(s) in RCA: 536] [Impact Index Per Article: 59.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 12/17/2014] [Accepted: 12/30/2014] [Indexed: 05/20/2023]
Abstract
In nature, plants constantly have to face pathogen attacks. However, plant disease rarely occurs due to efficient immune systems possessed by the host plants. Pathogens are perceived by two different recognition systems that initiate the so-called pattern-triggered immunity (PTI) and effector-triggered immunity (ETI), both of which are accompanied by a set of induced defenses that usually repel pathogen attacks. Here we discuss the complex network of signaling pathways occurring during PTI, focusing on the involvement of mitogen-activated protein kinases.
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Affiliation(s)
- Jean Bigeard
- Unité de Recherche en Génomique Végétale (URGV), UMR INRA/CNRS/Université d'Evry Val d'Essonne/Saclay Plant Sciences, 2 rue Gaston Crémieux, 91057 Evry, France
| | - Jean Colcombet
- Unité de Recherche en Génomique Végétale (URGV), UMR INRA/CNRS/Université d'Evry Val d'Essonne/Saclay Plant Sciences, 2 rue Gaston Crémieux, 91057 Evry, France
| | - Heribert Hirt
- Center for Desert Agriculture, 4700 King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia.
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36
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Kosma DK, Murmu J, Razeq FM, Santos P, Bourgault R, Molina I, Rowland O. AtMYB41 activates ectopic suberin synthesis and assembly in multiple plant species and cell types. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2014; 80:216-29. [PMID: 25060192 PMCID: PMC4321041 DOI: 10.1111/tpj.12624] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 07/17/2014] [Accepted: 07/21/2014] [Indexed: 05/18/2023]
Abstract
Suberin is a lipid and phenolic cell wall heteropolymer found in the roots and other organs of all vascular plants. Suberin plays a critical role in plant water relations and in protecting plants from biotic and abiotic stresses. Here we describe a transcription factor, AtMYB41 (At4g28110), that can activate the steps necessary for aliphatic suberin synthesis and deposition of cell wall-associated suberin-like lamellae in both Arabidopsis thaliana and Nicotiana benthamiana. Overexpression of AtMYB41 increased the abundance of suberin biosynthetic gene transcripts by orders of magnitude and resulted in the accumulation of up to 22 times more suberin-type than cutin-type aliphatic monomers in leaves. Overexpression of AtMYB41 also resulted in elevated amounts of monolignols in leaves and an increase in the accumulation of phenylpropanoid and lignin biosynthetic gene transcripts. Surprisingly, ultrastructural data indicated that overexpression led to the formation of suberin-like lamellae in both epidermal and mesophyll cells of leaves. We further implicate AtMYB41 in the production of aliphatic suberin under abiotic stress conditions. These results provide insight into the molecular-genetic mechanisms of the biosynthesis and deposition of a ubiquitous cell wall-associated plant structure and will serve as a basis for discovering the transcriptional network behind one of the most abundant lipid-based polymers in nature.
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Affiliation(s)
- Dylan K Kosma
- Department of Plant Biology, Michigan State UniversityEast Lansing, MI, 48824, USA
| | - Jhadeswar Murmu
- Department of Biology and Institute of Biochemistry, Carleton UniversityOttawa, ON, K1S 5B6, Canada
| | - Fakhria M Razeq
- Department of Biology and Institute of Biochemistry, Carleton UniversityOttawa, ON, K1S 5B6, Canada
| | - Patricia Santos
- Department of Plant, Soil and Microbial Sciences, Michigan State UniversityEast Lansing, MI, 48824, USA
| | - Richard Bourgault
- Department of Biology, Algoma UniversitySault Ste Marie, ON, P6A 2G4, Canada
| | - Isabel Molina
- Department of Biology, Algoma UniversitySault Ste Marie, ON, P6A 2G4, Canada
| | - Owen Rowland
- Department of Biology and Institute of Biochemistry, Carleton UniversityOttawa, ON, K1S 5B6, Canada
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37
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Moustafa K, AbuQamar S, Jarrar M, Al-Rajab AJ, Trémouillaux-Guiller J. MAPK cascades and major abiotic stresses. PLANT CELL REPORTS 2014; 33:1217-25. [PMID: 24832772 DOI: 10.1007/s00299-014-1629-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 04/22/2014] [Accepted: 04/26/2014] [Indexed: 05/19/2023]
Abstract
Plants have evolved with complex signaling circuits that operate under multiple conditions and govern numerous cellular functions. Stress signaling in plant cells is a sophisticated network composed of interacting proteins organized into tiered cascades where the function of a molecule is dependent on the interaction and the activation of another. In a linear scheme, the receptors of cell surface sense the stimuli and convey stress signals through specific pathways and downstream phosphorylation events controlled by mitogen-activated protein (MAP) kinases and second messengers, leading to appropriate adaptive responses. The specificity of the pathway is guided by scaffolding proteins and docking domains inside the interacting partners with distinctive structures and functions. The flexibility and the fine-tuned organization of the signaling molecules drive the activated MAP kinases into the appropriate location and connection to control and integrate the information flow. Here, we overview recent findings of the involvement of MAP kinases in major abiotic stresses (drought, cold and temperature fluctuations) and we shed light on the complexity and the specificity of MAP kinase signaling modules.
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Affiliation(s)
- Khaled Moustafa
- Institut National de la Santé et de la Recherche Médicale (INSERM), Créteil, France,
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Liu JZ, Braun E, Qiu WL, Shi YF, Marcelino-Guimarães FC, Navarre D, Hill JH, Whitham SA. Positive and negative roles for soybean MPK6 in regulating defense responses. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2014; 27:824-34. [PMID: 24762222 DOI: 10.1094/mpmi-11-13-0350-r] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
It has been well established that MPK6 is a positive regulator of defense responses in model plants such as Arabidopsis and tobacco. However, the functional importance of soybean MPK6 in disease resistance has not been investigated. Here, we showed that silencing of GmMPK6 in soybean using virus-induced gene silencing mediated by Bean pod mottle virus (BPMV) caused stunted growth and spontaneous cell death on the leaves, a typical phenotype of activated defense responses. Consistent with this phenotype, expression of pathogenesis-related (PR) genes and the conjugated form of salicylic acid were significantly increased in GmMPK6-silenced plants. As expected, GmMPK6-silenced plants were more resistant to downy mildew and Soybean mosaic virus compared with vector control plants, indicating a negative role of GmMPK6 in disease resistance. Interestingly, overexpression of GmMPK6, either transiently in Nicotiana benthamiana or stably in Arabidopsis, resulted in hypersensitive response (HR)-like cell death. The HR-like cell death was accompanied by increased PR gene expression, suggesting that GmMPK6, like its counterpart in other plant species, also plays a positive role in cell death induction and defense response. Using bimolecular fluorescence complementation analysis, we determined that GmMKK4 might function upstream of GmMPK6 and GmMKK4 could interact with GmMPK6 independent of its phosphorylation status. Taken together, our results indicate that GmMPK6 functions as both repressor and activator in defense responses of soybean.
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39
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Borisjuk N, Hrmova M, Lopato S. Transcriptional regulation of cuticle biosynthesis. Biotechnol Adv 2014; 32:526-40. [PMID: 24486292 DOI: 10.1016/j.biotechadv.2014.01.005] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 01/08/2014] [Accepted: 01/23/2014] [Indexed: 12/12/2022]
Abstract
Plant cuticle is the hydrophobic protection layer that covers aerial plant organs and plays a pivotal role during plant development and interactions of plants with the environment. The mechanical structure and chemical composition of cuticle lipids and other secondary metabolites vary considerably between plant species, and in response to environmental stimuli and stresses. As the cuticle plays an important role in responses of plants to major abiotic stresses such as drought and high salinity, close attention has been paid to molecular processes underlying the stress-induced biosynthesis of cuticle components. This review addresses the genetic networks responsible for cuticle formation and in particular highlights the role of transcription factors that regulate cuticle formation in response to abiotic stresses.
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Affiliation(s)
- Nikolai Borisjuk
- Australian Centre for Plant Functional Genomics, University of Adelaide, Waite Campus, Glen Osmond, South Australia 5064, Australia.
| | - Maria Hrmova
- Australian Centre for Plant Functional Genomics, University of Adelaide, Waite Campus, Glen Osmond, South Australia 5064, Australia.
| | - Sergiy Lopato
- Australian Centre for Plant Functional Genomics, University of Adelaide, Waite Campus, Glen Osmond, South Australia 5064, Australia.
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